Which of the following is/are false?

1. A.

   In IPv4 checksum is used in error detection in whole datagram.

2. B.

   IPv4 datagram can be fragmented by intermediate routers.

3. C.

   Path can be fixed for IPv4 datagram.

4. D.

   Minimum value stored in header length part of IPv4 header is 5

Attempted by 120 students.